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Which of the following depicts the usual order of extraction of teeth if serial extraction is chosen as the treatment to alleviate severe crowding?

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Correct Answer:
Primary canines, primary first molars, permanent first premolars
Description:
Primary canines are extracted to encourage alignment of the crowded incisors. However, the incisors align and upright, borrowing space otherwise needed for eruption of the permanent canine. Primary first molars are then extracted to encourage eruption of the first premolar so it may be extracted to make room for the permanent canine to erupt. These are followed by the permanent first premolar.  Textbook of ORTHODONTICS Sridhar Premkumar
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